A nurse is caring for a client who is receiving oxygen at 2 L/min via a nasal cannula. The nurse recognizes the client is receiving which of the following inspired oxygen concentration?
36%
70%
50%
28%
The Correct Answer is D
D. 28%:
When a client receives oxygen via a nasal cannula at a flow rate of 2 L/min, the approximate inspired oxygen concentration is around 24-28%. This is because each liter of oxygen delivered through a nasal cannula adds approximately 4% to the baseline room air concentration of 21%. Therefore, at 2 L/min, the client would be receiving approximately 24-28% inspired oxygen concentration.
A. 36%, B. 70%, C. 50%:
These percentages are not consistent with the oxygen concentration delivered via a nasal cannula at 2 L/min. Higher flow rates or alternative oxygen delivery systems, such as masks or high-flow nasal cannula, would be needed to achieve these concentrations.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Functional incontinence: Functional incontinence occurs when a person has difficulty reaching the toilet due to physical or cognitive impairments, such as mobility issues or dementia. Kegel exercises, which focus on strengthening the pelvic floor muscles, would not directly address the underlying causes of functional incontinence.
B. Stress incontinence: Stress incontinence is characterized by the involuntary leakage of urine during activities that increase abdominal pressure, such as coughing, sneezing, laughing, or exercising. Kegel exercises are specifically designed to strengthen the pelvic floor muscles, which can help support the bladder and reduce the occurrence of stress incontinence.
C. Urinary retention: Urinary retention refers to the inability to empty the bladder completely. While Kegel exercises may help improve bladder control, they are not typically used to address urinary retention, which often requires other interventions such as medications, catheterization, or surgery.
D. Fecal incontinence: Fecal incontinence involves the involuntary leakage of stool. Kegel exercises are not effective for addressing fecal incontinence, as they primarily target the pelvic floor muscles involved in urinary control, not bowel control. Treatment for fecal incontinence may include dietary modifications, medications, pelvic floor rehabilitation, or surgical interventions, depending on the underlying cause.
Correct Answer is ["B","D","E"]
Explanation
A. Prime the blood tubing with dextrose 5% in water:
Priming the blood tubing with dextrose 5% in water is not appropriate for a blood transfusion. Blood tubing should be primed with normal saline, not dextrose solutions, to prevent hemolysis of the blood components.
B. Check vital signs before transfusion:
Before initiating a blood transfusion, it's essential to assess the client's vital signs, including temperature, pulse, respiratory rate, and blood pressure. Monitoring vital signs before, during, and after the transfusion helps identify any adverse reactions promptly.
C. Insert an IV with a 13-gauge needle:
Using a 13-gauge needle for IV insertion is not appropriate for a blood transfusion. Typically, a smaller gauge needle, such as 18 or 20 gauge, is used for venous access during a blood transfusion to minimize discomfort and reduce the risk of hemolysis.
D. Transfuse the blood product within 5 hr after removing it from refrigeration:
Blood products should be transfused within a specific timeframe after removal from refrigeration to minimize the risk of bacterial growth and subsequent infection. Typically, this timeframe is within 4 hours for packed red blood cells and within 24 hours for platelets. Adhering to the recommended timeframe ensures the safety and efficacy of the transfusion.
E. Check the expiration date of the blood product with a second nurse:
Verifying the expiration date of the blood product with a second nurse or healthcare provider is a crucial step to ensure patient safety and prevent the administration of expired blood products. This double-check process helps mitigate the risk of administering outdated or expired blood components.
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